“The devil was in the grocery store yesterday . . .”

The first year of graduate school, it was the questions
that woke me every night at 3 a.m. When will they
    figure out I’m an impostor, and I can’t do the work?
How do I deal with the students in my own class?
     What can I do over the summer for money?
Insomnia, at least, made it easier to keep up with all the reading.